 |
|
|
| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Player | From-To | Avg | HR | RBI | W | L | SV | ERA | K |
|---|---|---|---|---|---|---|---|---|---|
| Charlie O'Brien | 1981-1981 | .243 | 12 | 40 | 0 | 0 | 0 | 0.00 | 0 |
| Pete M O'Brien | 1980-1981 | .258 | 35 | 138 | 0 | 0 | 0 | 0.00 | 0 |
| Syd O'Brien | 1965-1971 | .267 | 6 | 16 | 0 | 0 | 0 | 63.00 | 0 |
| Tommy O'Brien | 1941-1941 | .285 | 11 | 62 | 0 | 0 | 1 | 4.50 | 1 |
| Jack W O'Connor | 1979-1980 | .000 | 0 | 0 | 15 | 11 | 0 | 3.62 | 244 |
| Patrick O'Keefe | 1969-1973 | .267 | 0 | 18 | 0 | 0 | 0 | 0.00 | 0 |
| Paul O'Neill | 1981-1981 | .213 | 3 | 14 | 0 | 0 | 0 | 0.00 | 0 |
| Raymond O'Neill | 1969-1969 | .000 | 0 | 0 | 0 | 1 | 1 | 7.71 | 6 |
| John O'Rear | 1981-1981 | .224 | 7 | 15 | 0 | 0 | 0 | 0.00 | 0 |
| Don O'Riley | 1967-1967 | .000 | 0 | 0 | 1 | 1 | 1 | 1.50 | 5 |
| Evan O'Rourke | 1975-1975 | .318 | 0 | 2 | 7 | 4 | 0 | 3.34 | 97 |
| Denny O'Toole | 1970-1970 | .000 | 0 | 0 | 1 | 1 | 5 | 3.58 | 18 |
| Ken Oberkfell | 1977-1977 | .266 | 2 | 43 | 0 | 0 | 0 | 0.00 | 0 |
| Francisco Obregon | 1964-1965 | .268 | 4 | 52 | 0 | 0 | 2 | 5.63 | 10 |
| Benjamin Ochoa | 1971-1971 | .000 | 0 | 0 | 9 | 4 | 0 | 2.92 | 130 |
| Blue Moon Odom | 1964-1966 | .182 | 1 | 5 | 18 | 10 | 0 | 3.52 | 165 |
| Maurice Ogier | 1968-1968 | .333 | 0 | 1 | 2 | 2 | 0 | 6.00 | 24 |
| Ron Oglesby | 1970-1971 | .000 | 0 | 0 | 14 | 12 | 1 | 4.31 | 224 |
| Len Okrie | 1948-1948 | .300 | 0 | 0 | 0 | 0 | 0 | 0.00 | 0 |
| Bob Oldis | 1951-1955 | .272 | 1 | 40 | 0 | 0 | 0 | 0.00 | 0 |
| Tony Oliva | 1962-1962 | .350 | 17 | 93 | 0 | 0 | 0 | 0.00 | 0 |
| Ed Olivares | 1965-1966 | .239 | 19 | 93 | 0 | 0 | 0 | 0.00 | 0 |
| Al Oliver | 1967-1967 | .222 | 1 | 4 | 0 | 0 | 0 | 0.00 | 0 |
| Bob Oliver | 1965-1967 | .283 | 50 | 229 | 0 | 0 | 0 | 9.00 | 0 |
| Mike Olivo | 1967-1970 | .067 | 0 | 4 | 23 | 20 | 2 | 3.21 | 240 |
| Jim Ollom | 1968-1969 | .069 | 0 | 0 | 10 | 4 | 0 | 4.32 | 52 |
| Al Olmsted | 1980-1980 | .000 | 0 | 0 | 9 | 7 | 0 | 3.27 | 92 |
| Dean Olson | 1978-1979 | .000 | 0 | 0 | 28 | 28 | 1 | 3.91 | 378 |
| Martin Olson | 1970-1970 | .227 | 1 | 3 | 0 | 0 | 0 | 0.00 | 0 |
| Jose Oppenheimer | 1980-1980 | .214 | 0 | 7 | 0 | 0 | 0 | 0.00 | 0 |
| Player | From-To | Avg | HR | RBI | W | L | SV | ERA | K |
| Ernie Oravetz | 1962-1963 | .302 | 2 | 50 | 0 | 0 | 0 | 0.00 | 0 |
| Curt Oriani | 1973-1977 | .249 | 3 | 42 | 0 | 0 | 0 | 0.00 | 0 |
| John Orsino | 1968-1968 | .282 | 10 | 48 | 0 | 0 | 0 | 0.00 | 0 |
| Marcos Ortega | 1975-1975 | .000 | 0 | 0 | 12 | 2 | 0 | 0.76 | 106 |
| Frank Ortenzio | 1971-1971 | .100 | 0 | 1 | 0 | 0 | 0 | 0.00 | 0 |
| Jordan Ortiz | 1981-1981 | .000 | 0 | 0 | 3 | 3 | 0 | 5.37 | 40 |
| Jose L Ortiz | 1968-1971 | .285 | 2 | 41 | 0 | 0 | 0 | 0.00 | 0 |
| Nelson Ortiz | 1973-1979 | .103 | 0 | 1 | 55 | 36 | 2 | 3.33 | 510 |
| Roberto Ortiz | 1940-1941 | .303 | 8 | 109 | 22 | 15 | 1 | 4.44 | 207 |
| Ozzie Osborn | 1972-1974 | .000 | 0 | 0 | 25 | 37 | 0 | 4.30 | 312 |
| Richard Osentowski | 1970-1971 | .319 | 12 | 68 | 0 | 0 | 0 | 0.00 | 0 |
| Darrell Osteen | 1964-1965 | .156 | 1 | 4 | 24 | 13 | 19 | 3.05 | 204 |
| Amos Otis | 1967-1968 | .278 | 18 | 109 | 0 | 0 | 0 | 0.00 | 2 |
| Bob Owchinko | 1976-1977 | .077 | 0 | 0 | 9 | 7 | 5 | 2.56 | 83 |
